Composition of matter.



JOHN SPITTALL,

UNITED STATES PATENT OFFICE.

OF W INNIPEG, MANITOBA, CANADA, ASSIGNOR OF ONE- HALF TO ALEX MoMlLLAN,

OF WINNIPEG, CANADA.

Specification of Letters Patent.

Patented Oct. 9, 1906.

Application filed July 11,1905. Serial No. 269,250.

To all whom it may concern:

Be it known that I, JOHN SPITTALL, blacksmith, of the city of Winnipeg, in the Province of Manitoba, Canada, have invented a certain new and useful Composition of Matter to be Used for the Welding of Copper and other Metals, of which the followifig'isfifiecification.

My composition consists of the following ingredients, combined in the proportions stated-viz., boracic acid, two ounces; phosphate of soda, one ounce, these ingredients to be thoroughly mingled by stirring or any other process which will mingle them.

In using the above-named composition the pieces of copper or other metal to be welded should be heated cherry red. The exact temperature should be estimated by the op erator, as is done inthe welding of iron or steel. Those parts of the metal which it is proposed to make contiguous in the weld name to this specification in the presence of two subscribing witnesses.

JOHN SPITTALL. Witnesses:

ANDREW MITCHELL,

J. L. WILLITS. 

